The Challenge of Natural Hazards: Paper 1 Section A: Natural Hazards Flashcards
(14 cards)
Natural Hazard Definition
A Natural Hazard is a natural process which could cause death, injury or disruption to humans, or destroy property and possessions
Natural Disaster Definition
A natural hazard that has actually happened
Two Types of Natural Hazard
Geological Hazard
Meteorological Hazard
Geological Hazards
Caused by land and tectonic processes
Volcanoes
Earthquakes
Meteorological Hazards
Caused by weather and climate
Tropical Storms
Heatwaves
Cold Spells
Hazard Risk Definition
The probability of people being affected by a hazard in a particular
Factors that affect Hazard Risk
Vulnerability
Capacity To Cope
Nature of Natural Hazards
Capacity To Cope Hazard Risk
The better a population can cope with an extreme event, the lower the risk of them being severly affected
Vulnerability Hazard Risk
The more people that are in an area exposed to natural hazards, the greater the probability they will be affected by a natural hazard
Nature of Natural Hazards Hazard Risk
1) Type- the risk from some hazards is greater than others
2) Frequency- natural hazards that occur more often may carry a higher risk
3) Magnitude- more severe natural hazards tend to have the greatest effects
Primary Effects
- Buildings and roads destroyed
- People are injured or killed
- Crops and water supplies can be damaged or contaminated
- Electricity cables, gas pipes andcommunication networks can be damaged, cutting off supplies
Secondary Effects
- Initial hazard can trigger other hazards
- Aid and emergency vehicles can’t get through causing more deaths
- Shortage of clean water and lack of sanitation makes it easier for disease to spread
- Food shortages
- Country’s economy weakened
Long-Term Responses
- Repair homes or rehouse people
- Repair or rebuild buildings, roads, railways and bridges
- Reconnect broken electricity, water, gas and communication connections
- Improve forecasting, monitoring and evacuation plans
- Improve building regulations
- Boost economic recovery
- Build Back Better
Immediate Responses
- Evacuate people
- Treat injured and rescue anyone cut off
- Recover dead bodies to prevent disease spreading
- Provide temporary supplies of electricity and gas
- Provide food, drink and shelter
- Foreign governments or charities may send aid workers, supplies or financial donations